| ( | 3451 50 | − | x | ) | ÷ | x | = | 989 5000 |
| 方程两边同时乘以: | x |
| ( | 3451 50 | − | x | ) | = | 989 5000 | x |
3451 50 | − | x | = | 989 5000 | x |
| - | x | − | 989 5000 | x | = | - | 3451 50 |
| - | 5989 5000 | x | = | - | 3451 50 |
3451 50 | = | 5989 5000 | x |
5989 5000 | x | = | 3451 50 |
| x | = | 3451 50 | ÷ | 5989 5000 |
| = | 3451 50 | × | 5000 5989 |
| = | 3451 | × | 100 5989 |
| x | = | 345100 5989 |
| x | = | 57.622308 |